SH-101's are supposed to run on regulated supplies like the Boss PSA...if you run it on the unregulated version (ACA?) or any other unregulated supply it will hum badly.
Phil.
From: Johnny To: vintagesynthrepair@yahoogroups.com
Sent: Tuesday, 26 May, 2009 21:24:01
Subject: [vintagesynthrepair] hum when running SH101 with power supply
Sent: Tuesday, 26 May, 2009 21:24:01
Subject: [vintagesynthrepair] hum when running SH101 with power supply
Hey guys,
I figured you all have run into this problem before and I haven't yet.
I have an SH101 that I've been running off of batteries because when i plug in a power supply it creates a very loud hum. I went in and replaced the two caps that were nearest the power jack with no success.
Any other ideas? I have the schematics now and I'm gonna take a closer look at this supply, but I'd appreciate any inpute.
Thanks,
Johnny